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A Study on the Effect of Stress Concentration Factor Determined by 3D-ESPI System on the Fatigue Life  

김경수 (인하대학교 선박공학과)
심천식 (인하대학교 선박공학과)
Publication Information
Journal of Ocean Engineering and Technology / v.16, no.1, 2002 , pp. 46-51 More about this Journal
Abstract
Fatigue life estimation by the theoretical stress concentration factors are, in general, considerably different from test results. And in calculating stress concentration factor, it is very difficult to consider actual geometry and material property which are the notch shapes, imperfections or defects of materials such as porosities inclusions and casting defects, etc. Therefore, the paper deals with the experimental method to find out the more exact stress concentration factors by measuring the strain distributions on each specimen by 3D-ESPI(Electronic Speckle Pattern Interferometry) System. Then the fatigue lives are compared between theoretical calculations using stress concentration factors determined by 3D-ESPI system and fatigue test results.
Keywords
3D-ESPI System; Fatigue Life; Stress Concentration Factor; Semi-circular Edge Notch; Strain Distribution;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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